Walter Castor
The Walter Castor was a Czechoslovakian seven-cylinder, air-cooled radial engine for powering aircraft that was developed in the late 1920s. The Super Castor was a nine-cylinder development.[1] Castor I has been produced since 1928, Castor II since 1932 and Castor III since 1934.
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Walter Castor I (1928)
| Castor | |
|---|---|
.jpg) | |
| Walter Castor III | |
| Type | Radial aero engine |
| National origin | Czechoslovakia |
| Manufacturer | Walter Aircraft Engines |
| First run | 1929 |
Applications
- Aero A.35
- Aero A.304 (Super Castor)
- Airspeed Envoy
- Breda Ba.25
- Dornier Do K
- Fizir F1V
- Hopfner HV-6/28
- Letov Š-28
- Rogozarski AZR
- Savoia-Marchetti S.71
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Walter Castor II-Major (1932)
Engines on display
A preserved example of the Walter Castor engine is on display at the following museum:
- Prague Aviation Museum, Kbely
Specifications (Castor)
Data from Flight.,[2] L'Air 1 December 1929: Les Moteurs Walter[3]
General characteristics
- Type: 7-cylinder radial piston engine
- Bore: 135 mm (5.31 in)
- Stroke: 170 mm (6.69 in)
- Displacement: 17.033 l (1,039.4 cu in)
- Dry weight: 248 kg (547 lb)
Components
- Valvetrain: One intake and one exhaust valve per cylinder
- Fuel system: Zenith carburettor
- Fuel type: 50% Petrol, 50% Benzol
- Cooling system: Air-cooled
Performance
- Power output: Castor I 180 kW (240 hp) at 1,750 rpm normal; Castor II 190 kW (260 hp) at 1,850 rpm for take-off; Castor III 240 kW (320 hp) at 2,000 rpm
- Compression ratio: 6:1
- Specific fuel consumption: 0.302 kg/kW/h (0.496 lb/hp/h) at 0.8 - 0.81 specific gravity
- Oil consumption: 0.027 kg/kW/h (0.044 lb/hp/h)
- Power-to-weight ratio: 0.78 kW/kg (0.48 hp/lb)
References
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Wikimedia Commons has media related to Walter Castor. |
Notes
- Gunston 1989, p. 174.
- Flight - The Walter Castor - 14 February 1929 Retrieved: 19 October 2010
- "Les Moteurs Walter". L'Air : revue mensuelle : organe de la Ligue nationale populaire de l'aviation (in French) (242): 35. 1 December 1929. Retrieved 14 February 2019.
Bibliography
- Gunston, Bill. World Encyclopedia of Aero Engines. Cambridge, England. Patrick Stephens Limited, 1989. ISBN 1-85260-163-9
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